Tape cutting machine



Nov. 17, 1953 M. s. MANSSON TAPE CUTTING MACHINE 4 Sheets-Sheet '1 FiledApril 22, 1948 INVENTOR.

irroe/vzy Nov. 17, 1953 M. s. MANSSON 2,659,435 TAPE CUTTING MACHINEFiled April 22, 1948 4 Sheets-Sheet 2 INVENTOR.

Men .5. Man/55a BY Nov. 17, 1953 Filed April 22, 1948 M. S. MANSSON TAPECUTTING MACHINE 4 Sheets-Sheet 3 INVENTOR. M/JQr/A/ SMMsu-a/V Nov. 17,1953 M. s. MANSSON TAPE CUTTING MACHINE 4 Sheets-Sheet 4 Filed April 22,1948 INVENTOR. Mqernv S Mq/vssozv Patented Nov. 17, 1953 The presentinvention is directed to cutting ma labor in order to accomplish such aresult.

The present invention is intended and adapted to overcome thedifficulties and disadvantages and economically.

It is also among the objects of the present inventlon to provide acutting apparatus which is be out. It is further among the objects ofthe present invention to provide adaptable to cooperate with a sewingmachine or to operate independently thereof.

In practicing the present invention, there is provided a series of rollsor the like, capable of drawing tape or may be adjusted being cut may beM ments and additional circuits are provided so that tape not having anycross seams may be accurately cut,

as well as relatively long lengths of tape.

In the accompanying drawing constituting a part hereof, and in whichlike reference characters indicate like parts,

Fig. 1 is a top plan view of a cutting machine or apparatus made inaccordance with the present invention, some parts being broken away forclearness;

Fig. 2 is an end elevational view thereof looking from the left of Fig.1;

Fig. 3 is an end elevational view thereof, looking towards the sewingmachine, some parts being omitted and other parts being shown insection;

Fig. 4 is a side elevational view thereof, some parts being broken awayfor clearness;

Fig. 5 is a vertical cross-sectional fragmentary view taken along theline 5-5 of Fig. 3,

Fig. 6 is a diagrammatic view showing the electrical circuitsincorporated in the device, and

Fig. 7 shows a modified mounting of the cutting knife.

to be suitably stitched.

The device of the present invention may consist of a support 5 suitablylocated with respect to the sewing machine. At the end of the supportadjacent to the sewing head on a bracket 6 are a pair of wheels 1 and 8,the tape 4 passing around Wheel 7 to allow inspection of the tape, andover wheel 8. The tape then passes over casing 9 having a microswitchIii therein. A wheel H is mounted on the end of the switch lever and Asprin held cover 9 confines the tape to insure contact thereof withwheel I I.

Adjacent to said casing and to the right thereof, as shown in Fig. 4,

#3 to maintain a substantially constant adjustable level in containerl2. Horizontally mounted rolls l4 and are positioned so that tape 4passes between the same. Roll 14 takes up water and moistens the tape.The latter then passes around roll l6 and over cylindrical arm l1 whichconstitutes an ironer. It contains a suitable electrical resistanceelement to maintain desired temperatures. A presser 13 mounted in casing19 having a coil spring therein exerting pressure on said presser tendsto keep the same in position to iron the tape. Handle 2% on the end ofpresser 18 allows the same to be manually lifted.

Said ironing mechanism is mounted on one arm of a bracket 2| which isfixed to support 5. An adjustable measuring bar 22 extends verticallythrough slot 23 in bracket 21. The lower end 24 of bar 22 is providedwith a roller and tape 4 is adapted to pass under the same. Means, notshown, are provided for fixing bar 22 in its bracket, said meansallowing adjustment of the vertical position thereof. One may use forthis purpose a set screw type of device passing through bracket 21 andbearing against bar 22.

A horizontal shaft 26 which constitutes the driving member has a feedroller secured there- A second roller carried by shaft 21 mounted inyoke 23, fixed on support 5, is intended to press against roller 25 andis geared thereto. This is accomloaded bearing support in yoke 28,against which a coil spring 28 mounted in said yoke presses. Handle 22allows the retraction of bearing 34.

The tape after being drawn through rollers 25-21 then enters guide 32.It consists of a flat base on which the tape lies and is substantiallyenclosed but with a slot 33 at the entrance end thereof. A chamber 34 isprovided therein, said chamber being higher at the entrance end andsloping down to slot 35 at the exit end thereof. Guide 32 may be mountedon plate 3| secured to support 5.

On said plate is a stub shaft 28 carrying arm 31 so as to oscillate onsaid shaft. Said arm carries a hardened knife blade 38 adapted tocooperate with a similar knife blade 39 fixed on plate 3|. Thecooperating blades may be given an automatically retroactive action bysuitable spring 31' or other arrangements, as is well known. Dependingfrom the end of arm 31 is rod 40 carrying an armature 41 at the lowerend thereof. Said armature operates within solenoid 42 attached to thesupport at 43.

A'microswitch 44 having an operating arm 45 is secured in proximity toarmature 4| so that arm 45 is almost in contact therewith. Microswitch44 may be termed a kick-back switch for purposes to be later described.Pin 46 at the top of armature 4| is so located with respect to arm 45that when arm 31 is in its lowest position, pin 46 depresses arm 45 andopens the switch which is otherwise normally closed.

With reference to Fig. 4, tape Ll having a series of transverse seams 4'therein passes to the right around wheel 1 and over wheel 8 and incontact with roll ll, then through moistener 14-15 and between ironingelements l1--l8, one or both of which is electrically heated, wherebythe tape is ironed. It then passes under roller 24 and upwardly betweenrollers 25 and 21, being drawn through the foregoing elements by thepositive action of rollers 25 and 21. It then passes through guide 32 inposition for knife 38 to cut the same, as shown in Fig. 1. When a seamin the tape contacts roll II, it depresses the same and closes thecircuit of microswitch ill. The

action which takes place is illustrated by the wiring diagram of Fig. 6.Ther is provided a transformer 41 and a relay 48 having a coil 49therein. Power at the usual voltage enters the transformer by line 50.Ironer I1 is directly supplied with current through line 5|, there beingthe usual switch in the line. Knife solenoid 42 is supplied with thehigh voltage current through line 52 From the low voltage side of thetransformer, which may conveniently be six volts, a lead 53 connectswith coil 49, the other end of which has a lead 54 connected to toggleswitch 58. Assuming that the switch is in the position shown, currentflows through terminal 58', wire 55, to kickback switch 44, then throughwire 55-51 to the other terminal of the secondary transformer. Aparallel circuit leading from wire 55 extends through wire 59 to theseam microswitch It), then by wires 60 back to the transformer.

In operation, when a seam closes microswitch l0, current flows from thesecondary of the transformer through the relay, closing the same andenergizing solenoid 42. This immediately pulls arm 31 down, causingknife blades 38-39 to cut off a piece of tape 4'. When pin 46 strikesarm 45, switch 44 is opened, breaking the circuit of microswitch Ill andallowing the knife to be retracted by a spring 31' into its initialinoperative position. If, however, the seam has not passed roll II andstill continues to maintain switch 10 closed, the circuit will beimmediately reestablished before arm 31 has an opportunity of beingretracted due to the inertia of the mass involved. Therefore, as long asthe seam is in contact with roll H, the knife will flutter back andforth and after the seam has passed over roll H, the knife will beretracted.

Because of the character of guide 32 in case the knife is held down fora substantial fraction of time, tape will be continued to be fed by theaction of roller 25 and a certain amount thereof will accumulate betweenroller 25 and knife 38. Because of the shape of the chamber 34, suchaccumulation will be permitted and after the knife has been retracted,the shape of the chamber is such that the accumulation will be forcedout of slot 35, thus at the time of the next operation of the knife, theexact predetermined amount of tape will have been fed so that identicallengths will be cut off under all conditions.

The outer end of shaft 28 as shown in Figs. 2 and 3 is provided with aslippin clutch pulley 6|, spring pressed as shown at 62. This in turn isconnected by belt 63 to pulley 54, which in turn is connected by belt 65to pulley 66 secured onto the main shaft of the sewing machine. Motor 61drives said main shaft through belt 61'.

When it is desired, in a modification, to cut lengths of tape from acontinuous roll or a long strip, and not having any transverse seamstherein, the following mechanism is used for measuring the lengths to becut. Shaft 69 has pulley 10 thereon and belt 1| therefrom passes overpulley 12. -Said pulley is associated with an idler pulley 13 (see Fig.3) and an additional pulley 14 on the opposite side thereof. A belt 15passes over pulley 14 and pulley 15' mounted on shaft 28. A series ofcone pulleys 12, 13, 14 is mounted on stub shaft 18 carried by yoke 16,which is pivoted at 11 to the base of the machine. On arm 19 of yoke 16is a screw mounted in holder 8|. rhe adjustment of the length of tape tobe cut is determined by the ratio of speeds of pulleys 15' and 10. Theratio is altered by threading screw Bil in One direction or the other,thus pivotally moving pulley 13 about shaft 77 as a center. This changesthe tensions in belts 7| and 75 and alters the speed throw switch, isplaced in a position to close the circuit through terminal 58. Currentfrom the transformer passes through said switch, line 84, to microswitch35, then by wire 86 through wire 60' back to the Another circuit isprovided from point 88 through a counter-solenoid 89 for actuating thecounter, wires 90 and 51, back to the transformer. There is alsoprovided a counter predetermining switch 91 for automatically stoppingthe operation, which is connected by wire 92 to the low voltage supplyand wire 93 leads to ground.

Means are provided so that during the rotation of the speed adjustingpulleys a pin or other element, shown at the lower left of Fig. 3, onthe shaft 69 of the pulley 79 closes microswitch 85 at each rotation andthus closes the circuit of the knife solenoid 42, causing thepredetermined length. An indicator is usually provided to visually showthe lengths being cut. This includes a pointer 82 fixed on shaft 71 andcooperating with calibrated scale 83 on a side of support 5. As yoke 76is of pin 46 which extends through armature ti, on opposite sides ofsaid armature. Said springs are anchored at 93 on support and bias leverlever 9| received finger 95 on the end of arm 37.

operates with a cam follower mounted on said support and. normallycontacting the face 98 of said lever. urges the lever into cooperativerelation with finger 95 and follower 97. Spring I92 tends to retract arm37 and hold it in its upper position.

In the operation thereof, when solenoid 42 is energized it pulls lever91 down against the action of springs 92 and 109. Notch 95 contactingfinger 95 pulls arm 37 down causing knife blades 38-39 to cut the tape.Face 98 moves past folnoid 42 is closed, lever 9| remains in its lowerposition and the knife cannot again operate until the lever is firstreleased by the solenoid 42. This prevents accidental cuttings of thetape cam face 99 which 00- r where seams therein are relatively long.When solenoid 02 is deenergized, armature 4| moves upwardly by pressureof spring 92 carrying lever 91 upwardly until notch 99 and cam face 95are above arm 37 and cam 97, respectively, when spring 99 pulls lever 91to the left into operative position.

Other modifications of the invention may be made within the spiritthereof, and the invention is to be broadly construed and to be limitedonly by the character of the claims appended hereto.

I claim:

1. A machine for cutting tape and the like comprising means for feedingtape including a driven roller over which said tape passes, a sensitiveswitch adapted to be operated by contact with a protuberance on saidtape, a knife movable across the path of said tape, means actuated by acircuit controlled by said switch to move said knife to out said tape atpredetermined intervals, said knife being mounted on a pivoted arm, anarmature actuated by a solenoid to said arm including a lever secured tosaid armature notches on said said finger for operation of said 2. Amachine for cutting MARTIN S. MANSSON.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 219,963 Mather Sept. 23, 1879 918.813 Armstrong Apr. 20, 19091,046,519 Westbrook Dec. 10, 1912 1,090,388 Foote Mar. 17, 19141,161,850 Dixon Nov. 30, 1915 1,259,968 Edwards Mar. 19, 1918 1,318,320Frohn Oct. 7, 1919 1,647,305 Peters Nov. 1, 1927 1,822,902 Osborne Sept.15, 1931 1,837,762 Dale Dec. 22, 1931 1,900,252 Morgan Mar. 7, 19331,947,399 Umansky Feb. 13, 1934 1,958,138 Fowler et a1 May 8, 19342,059,368 Kruttshnitt Nov. 3, 1936 2,075,037 Hunter Mar. 30, 19372,077,439 Schmitt Apr. 20, 1937 2,211,362 Bennett Aug. 13, 19402,465,453 Holbrook Mar. 29, 1949 FOREIGN PATENTS Number Country Date369,064 Germany Feb. 14, 1923

